1953536121103 has 18 divisors (see below), whose sum is σ = 2238804322664. Its totient is φ = 1669828656192.

The previous prime is 1953536121079. The next prime is 1953536121107. The reversal of 1953536121103 is 3011216353591.

It is not a de Polignac number, because 1953536121103 - 2³³ = 1944946186511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953536121107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2414753763 + ... + 2414754571.

Almost surely, 2^{1953536121103} is an apocalyptic number.

1953536121103 is a deficient number, since it is larger than the sum of its proper divisors (285268201561).

1953536121103 is an frugal number, since it uses more digits than its factorization.

1953536121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 1953536121103 in words is "one trillion, nine hundred fifty-three billion, five hundred thirty-six million, one hundred twenty-one thousand, one hundred three".